Hitchhiker's Guide
skinparam shadowing false command. 
usecase来定义用例。 还可以用关键字as定义一个别名，这个别名可以在以后定义关系的时候使用。
@startuml
(First usecase)
(Another usecase) as (UC2)
usecase UC3
usecase (Last\nusecase) as UC4
@enduml
actor关键字来定义角色。 还可以用关键字as来定义一个别名，这个别名可以在以后定义关系的时候使用。 后面我们会看到角色的定义是可选的。
@startuml
:First Actor:
:Another\nactor: as Men2
actor Men3
actor :Last actor: as Men4
@enduml
skinparam actorStyle awesome command;skinparam actorStyle hollow command.
@startuml
:User: --> (Use)
"Main Admin" as Admin
"Use the application" as (Use)
Admin --> (Admin the application)
@enduml
@startuml
skinparam actorStyle awesome
:User: --> (Use)
"Main Admin" as Admin
"Use the application" as (Use)
Admin --> (Admin the application)
@enduml
@startuml
skinparam actorStyle Hollow
:User: --> (Use)
"Main Admin" as Admin
"Use the application" as (Use)
Admin --> (Admin the application)
@enduml
--..==__。 并且还可以在分隔符中间放置标题。
@startuml
usecase UC1 as "You can use
several lines to define your usecase.
You can also use separators.
--
Several separators are possible.
==
And you can add titles:
..Conclusion..
This allows large description."
@enduml
@startuml
left to right direction
actor Guest as g
package Professional {
actor Chef as c
actor "Food Critic" as fc
}
package Restaurant {
usecase "Eat Food" as UC1
usecase "Pay for Food" as UC2
usecase "Drink" as UC3
usecase "Review" as UC4
}
fc --> UC4
g --> UC1
g --> UC2
g --> UC3
@enduml
rectangle to change the display of the package.
@startuml
left to right direction
actor "Food Critic" as fc
rectangle Restaurant {
usecase "Eat Food" as UC1
usecase "Pay for Food" as UC2
usecase "Drink" as UC3
}
fc --> UC1
fc --> UC2
fc --> UC3
@enduml
-->连接角色和用例。 横杠-越多，箭头越长。 通过在箭头定义的后面加一个冒号及文字的方式来添加标签。 在这个例子中，User并没有定义，而是直接拿来当做一个角色使用。
@startuml
User -> (Start)
User --> (Use the application) : A small label
:Main Admin: ---> (Use the application) : This is\nyet another\nlabel
@enduml
<|--符号表示。
@startuml
:Main Admin: as Admin
(Use the application) as (Use)
User <|-- Admin
(Start) <|-- (Use)
@enduml
note left of , note right of , note top of , note bottom of等关键字给一个对象添加注释。 注释还可以通过note关键字来定义，然后用..连接其他对象。
@startuml
:Main Admin: as Admin
(Use the application) as (Use)
User -> (Start)
User --> (Use)
Admin ---> (Use)
note right of Admin : This is an example.
note right of (Use)
A note can also
be on several lines
end note
note "This note is connected\nto several objects." as N2
(Start) .. N2
N2 .. (Use)
@enduml
<< 和 >> 来定义角色或者用例的构造类型。
@startuml
User << Human >>
:Main Database: as MySql << Application >>
(Start) << One Shot >>
(Use the application) as (Use) << Main >>
User -> (Start)
User --> (Use)
MySql --> (Use)
@enduml
--表示，可以用一个横杠或点来表示水平连接。
@startuml
:user: --> (Use case 1)
:user: -> (Use case 2)
@enduml
@startuml
(Use case 1) <.. :user:
(Use case 2) <- :user:
@enduml
left, right, up或down等关键字来改变方向。
@startuml
:user: -left-> (dummyLeft)
:user: -right-> (dummyRight)
:user: -up-> (dummyUp)
:user: -down-> (dummyDown)
@enduml
newpage关键字将图示分解为多个页面。
@startuml
:actor1: --> (Usecase1)
newpage
:actor2: --> (Usecase2)
@enduml
@startuml
'default
top to bottom direction
user1 --> (Usecase 1)
user2 --> (Usecase 2)
@enduml
你可以用left to right direction命令改变图示方向。
@startuml
left to right direction
user1 --> (Usecase 1)
user2 --> (Usecase 2)
@enduml
@startuml
skinparam handwritten true
skinparam usecase {
BackgroundColor DarkSeaGreen
BorderColor DarkSlateGray
BackgroundColor<< Main >> YellowGreen
BorderColor<< Main >> YellowGreen
ArrowColor Olive
ActorBorderColor black
ActorFontName Courier
ActorBackgroundColor<< Human >> Gold
}
User << Human >>
:Main Database: as MySql << Application >>
(Start) << One Shot >>
(Use the application) as (Use) << Main >>
User -> (Start)
User --> (Use)
MySql --> (Use)
@enduml
@startuml
left to right direction
skinparam packageStyle rectangle
actor customer
actor clerk
rectangle checkout {
customer -- (checkout)
(checkout) .> (payment) : include
(help) .> (checkout) : extends
(checkout) -- clerk
}
@enduml
